Objective To investigate night - time hypoxemia and change of sleep structure in the patients with overlap syndrome (OS).

目的探讨重叠综合征(OS)患者夜间缺氧和睡眠结构的变化。

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Results Overlap syndrome had increased number of WASO (wake after sleep onset), fallen asleep the incubation period shorten, sleep apnea time was long, and the nocturnal hypoxemia was obvious.

结果重叠综合征患者觉醒次数增加，入睡潜伏期缩短，睡眠呼吸暂停时间长，夜间低氧血症明显。

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Tracheotomy and PEEP ventilation should be carried out immediately on the patients with a long time of aspiration, severe hypoxemia, heart failure, pulmonary, or brain damage.

对于误吸时间长，严重低氧血症，伴有心、肺、脑损害者，应及时行气管切开，PEEP正压通气。

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